Is the prog DVD Decrypter or Dycrypter?

Browsing this forum, I see that a lot of people have success with a program called DVD Dycrypter. I have also seen this program called DVD Decrypter other places on this forum. Which spelling is correct? I can't find DVD Dycrypter since the maker has closed down his site. If Dycrypter is the right program, can someone tell me where to get it or send it to me(since I heard it is freeware)? Thanks for any help.